Etusivu Tutki Apua
Rekisteröidy Kirjaudu sisään
wangjiahui
/
sanwei_web
1
0
Fork 0
Tiedostot Ongelmat 0 Pull-pyynnöt 0 Wiki
Puu: f91bd50abf
Haarat Tagit
sanwei_web
/
static
/
lib
/
Cesium
/
Workers
/
EllipseGeometry-e6f948bb.js

EllipseGeometry-e6f948bb.js 16 KB
Historia Raaka

12345678910111213141516171819202122232425 
  1. /**
    2. 

  2.  * @license
    3. 

  3.  * Cesium - https://github.com/CesiumGS/cesium
    4. 

  4.  * Version 1.95
    5. 

  5.  *
    6. 

  6.  * Copyright 2011-2022 Cesium Contributors
    7. 

  7.  *
    8. 

  8.  * Licensed under the Apache License, Version 2.0 (the "License");
    9. 

  9.  * you may not use this file except in compliance with the License.
    10. 

  10.  * You may obtain a copy of the License at
    11. 

  11.  *
    12. 

  12.  * http://www.apache.org/licenses/LICENSE-2.0
    13. 

  13.  *
    14. 

  14.  * Unless required by applicable law or agreed to in writing, software
    15. 

  15.  * distributed under the License is distributed on an "AS IS" BASIS,
    16. 

  16.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    17. 

  17.  * See the License for the specific language governing permissions and
    18. 

  18.  * limitations under the License.
    19. 

  19.  *
    20. 

  20.  * Columbus View (Pat. Pend.)
    21. 

  21.  *
    22. 

  22.  * Portions licensed separately.
    23. 

  23.  * See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
    24. 

  24.  */
    25. 

  25. define(["exports","./Transforms-d3d3b2a9","./Matrix2-73789715","./RuntimeError-4f8ec8a2","./ComponentDatatype-e7fbe225","./defaultValue-97284df2","./EllipseGeometryLibrary-0adcaeed","./GeometryAttribute-fd1d7e90","./GeometryAttributes-734a3446","./GeometryInstance-4bfcfe78","./GeometryOffsetAttribute-59b14f45","./GeometryPipeline-a847e31f","./IndexDatatype-65271ba3","./VertexFormat-9886cb81"],(function(t,e,i,r,n,o,a,s,l,u,m,c,p,y){"use strict";const d=new i.Cartesian3,f=new i.Cartesian3,A=new i.Cartesian3,x=new i.Cartesian3,h=new i.Cartesian2,g=new i.Matrix3,_=new i.Matrix3,b=new e.Quaternion,C=new i.Cartesian3,w=new i.Cartesian3,E=new i.Cartesian3,M=new i.Cartographic,I=new i.Cartesian3,T=new i.Cartesian2,G=new i.Cartesian2;function N(t,r,u){const c=r.vertexFormat,p=r.center,y=r.semiMajorAxis,x=r.semiMinorAxis,N=r.ellipsoid,P=r.stRotation,v=u?t.length/3*2:t.length/3,V=r.shadowVolume,F=c.st?new Float32Array(2*v):void 0,D=c.normal?new Float32Array(3*v):void 0,O=c.tangent?new Float32Array(3*v):void 0,S=c.bitangent?new Float32Array(3*v):void 0,L=V?new Float32Array(3*v):void 0;let R=0,j=C,z=w,k=E;const B=new e.GeographicProjection(N),Y=B.project(N.cartesianToCartographic(p,M),I),H=N.scaleToGeodeticSurface(p,d);N.geodeticSurfaceNormal(H,H);let U=g,Q=_;if(0!==P){let t=e.Quaternion.fromAxisAngle(H,P,b);U=i.Matrix3.fromQuaternion(t,U),t=e.Quaternion.fromAxisAngle(H,-P,b),Q=i.Matrix3.fromQuaternion(t,Q)}else U=i.Matrix3.clone(i.Matrix3.IDENTITY,U),Q=i.Matrix3.clone(i.Matrix3.IDENTITY,Q);const W=i.Cartesian2.fromElements(Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY,T),J=i.Cartesian2.fromElements(Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY,G);let q=t.length;const Z=u?q:0,K=Z/3*2;for(let e=0;e<q;e+=3){const r=e+1,n=e+2,o=i.Cartesian3.fromArray(t,e,d);if(c.st){const t=i.Matrix3.multiplyByVector(U,o,f),e=B.project(N.cartesianToCartographic(t,M),A);i.Cartesian3.subtract(e,Y,e),h.x=(e.x+y)/(2*y),h.y=(e.y+x)/(2*x),W.x=Math.min(h.x,W.x),W.y=Math.min(h.y,W.y),J.x=Math.max(h.x,J.x),J.y=Math.max(h.y,J.y),u&&(F[R+K]=h.x,F[R+1+K]=h.y),F[R++]=h.x,F[R++]=h.y}(c.normal||c.tangent||c.bitangent||V)&&(j=N.geodeticSurfaceNormal(o,j),V&&(L[e+Z]=-j.x,L[r+Z]=-j.y,L[n+Z]=-j.z),(c.normal||c.tangent||c.bitangent)&&((c.tangent||c.bitangent)&&(z=i.Cartesian3.normalize(i.Cartesian3.cross(i.Cartesian3.UNIT_Z,j,z),z),i.Matrix3.multiplyByVector(Q,z,z)),c.normal&&(D[e]=j.x,D[r]=j.y,D[n]=j.z,u&&(D[e+Z]=-j.x,D[r+Z]=-j.y,D[n+Z]=-j.z)),c.tangent&&(O[e]=z.x,O[r]=z.y,O[n]=z.z,u&&(O[e+Z]=-z.x,O[r+Z]=-z.y,O[n+Z]=-z.z)),c.bitangent&&(k=i.Cartesian3.normalize(i.Cartesian3.cross(j,z,k),k),S[e]=k.x,S[r]=k.y,S[n]=k.z,u&&(S[e+Z]=k.x,S[r+Z]=k.y,S[n+Z]=k.z))))}if(c.st){q=F.length;for(let t=0;t<q;t+=2)F[t]=(F[t]-W.x)/(J.x-W.x),F[t+1]=(F[t+1]-W.y)/(J.y-W.y)}const X=new l.GeometryAttributes;if(c.position){const e=a.EllipseGeometryLibrary.raisePositionsToHeight(t,r,u);X.position=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.DOUBLE,componentsPerAttribute:3,values:e})}if(c.st&&(X.st=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:2,values:F})),c.normal&&(X.normal=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:D})),c.tangent&&(X.tangent=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:O})),c.bitangent&&(X.bitangent=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:S})),V&&(X.extrudeDirection=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:L})),u&&o.defined(r.offsetAttribute)){let t=new Uint8Array(v);if(r.offsetAttribute===m.GeometryOffsetAttribute.TOP)t=t.fill(1,0,v/2);else{const e=r.offsetAttribute===m.GeometryOffsetAttribute.NONE?0:1;t=t.fill(e)}X.applyOffset=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.UNSIGNED_BYTE,componentsPerAttribute:1,values:t})}return X}function P(t){const e=new Array(t*(t+1)*12-6);let i,r,n,o,a,s=0;for(i=0,n=1,o=0;o<3;o++)e[s++]=n++,e[s++]=i,e[s++]=n;for(o=2;o<t+1;++o){for(n=o*(o+1)-1,i=(o-1)*o-1,e[s++]=n++,e[s++]=i,e[s++]=n,r=2*o,a=0;a<r-1;++a)e[s++]=n,e[s++]=i++,e[s++]=i,e[s++]=n++,e[s++]=i,e[s++]=n;e[s++]=n++,e[s++]=i,e[s++]=n}for(r=2*t,++n,++i,o=0;o<r-1;++o)e[s++]=n,e[s++]=i++,e[s++]=i,e[s++]=n++,e[s++]=i,e[s++]=n;for(e[s++]=n,e[s++]=i++,e[s++]=i,e[s++]=n++,e[s++]=i++,e[s++]=i,++i,o=t-1;o>1;--o){for(e[s++]=i++,e[s++]=i,e[s++]=n,r=2*o,a=0;a<r-1;++a)e[s++]=n,e[s++]=i++,e[s++]=i,e[s++]=n++,e[s++]=i,e[s++]=n;e[s++]=i++,e[s++]=i++,e[s++]=n++}for(o=0;o<3;o++)e[s++]=i++,e[s++]=i,e[s++]=n;return e}let v=new i.Cartesian3;const V=new e.BoundingSphere,F=new e.BoundingSphere;function D(t){const r=t.center,y=t.ellipsoid,_=t.semiMajorAxis;let v=i.Cartesian3.multiplyByScalar(y.geodeticSurfaceNormal(r,d),t.height,d);V.center=i.Cartesian3.add(r,v,V.center),V.radius=_,v=i.Cartesian3.multiplyByScalar(y.geodeticSurfaceNormal(r,v),t.extrudedHeight,v),F.center=i.Cartesian3.add(r,v,F.center),F.radius=_;const D=a.EllipseGeometryLibrary.computeEllipsePositions(t,!0,!0),O=D.positions,S=D.numPts,L=D.outerPositions,R=e.BoundingSphere.union(V,F),j=N(O,t,!0);let z=P(S);const k=z.length;z.length=2*k;const B=O.length/3;for(let t=0;t<k;t+=3)z[t+k]=z[t+2]+B,z[t+1+k]=z[t+1]+B,z[t+2+k]=z[t]+B;const Y=p.IndexDatatype.createTypedArray(2*B/3,z),H=new s.Geometry({attributes:j,indices:Y,primitiveType:s.PrimitiveType.TRIANGLES}),U=function(t,r){const a=r.vertexFormat,u=r.center,c=r.semiMajorAxis,p=r.semiMinorAxis,y=r.ellipsoid,_=r.height,N=r.extrudedHeight,P=r.stRotation,v=t.length/3*2,V=new Float64Array(3*v),F=a.st?new Float32Array(2*v):void 0,D=a.normal?new Float32Array(3*v):void 0,O=a.tangent?new Float32Array(3*v):void 0,S=a.bitangent?new Float32Array(3*v):void 0,L=r.shadowVolume,R=L?new Float32Array(3*v):void 0;let j=0,z=C,k=w,B=E;const Y=new e.GeographicProjection(y),H=Y.project(y.cartesianToCartographic(u,M),I),U=y.scaleToGeodeticSurface(u,d);y.geodeticSurfaceNormal(U,U);const Q=e.Quaternion.fromAxisAngle(U,P,b),W=i.Matrix3.fromQuaternion(Q,g),J=i.Cartesian2.fromElements(Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY,T),q=i.Cartesian2.fromElements(Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY,G);let Z=t.length;const K=Z/3*2;for(let e=0;e<Z;e+=3){const r=e+1,n=e+2;let o,s=i.Cartesian3.fromArray(t,e,d);if(a.st){const t=i.Matrix3.multiplyByVector(W,s,f),e=Y.project(y.cartesianToCartographic(t,M),A);i.Cartesian3.subtract(e,H,e),h.x=(e.x+c)/(2*c),h.y=(e.y+p)/(2*p),J.x=Math.min(h.x,J.x),J.y=Math.min(h.y,J.y),q.x=Math.max(h.x,q.x),q.y=Math.max(h.y,q.y),F[j+K]=h.x,F[j+1+K]=h.y,F[j++]=h.x,F[j++]=h.y}s=y.scaleToGeodeticSurface(s,s),o=i.Cartesian3.clone(s,f),z=y.geodeticSurfaceNormal(s,z),L&&(R[e+Z]=-z.x,R[r+Z]=-z.y,R[n+Z]=-z.z);let l=i.Cartesian3.multiplyByScalar(z,_,x);if(s=i.Cartesian3.add(s,l,s),l=i.Cartesian3.multiplyByScalar(z,N,l),o=i.Cartesian3.add(o,l,o),a.position&&(V[e+Z]=o.x,V[r+Z]=o.y,V[n+Z]=o.z,V[e]=s.x,V[r]=s.y,V[n]=s.z),a.normal||a.tangent||a.bitangent){B=i.Cartesian3.clone(z,B);const l=i.Cartesian3.fromArray(t,(e+3)%Z,x);i.Cartesian3.subtract(l,s,l);const u=i.Cartesian3.subtract(o,s,A);z=i.Cartesian3.normalize(i.Cartesian3.cross(u,l,z),z),a.normal&&(D[e]=z.x,D[r]=z.y,D[n]=z.z,D[e+Z]=z.x,D[r+Z]=z.y,D[n+Z]=z.z),a.tangent&&(k=i.Cartesian3.normalize(i.Cartesian3.cross(B,z,k),k),O[e]=k.x,O[r]=k.y,O[n]=k.z,O[e+Z]=k.x,O[e+1+Z]=k.y,O[e+2+Z]=k.z),a.bitangent&&(S[e]=B.x,S[r]=B.y,S[n]=B.z,S[e+Z]=B.x,S[r+Z]=B.y,S[n+Z]=B.z)}}if(a.st){Z=F.length;for(let t=0;t<Z;t+=2)F[t]=(F[t]-J.x)/(q.x-J.x),F[t+1]=(F[t+1]-J.y)/(q.y-J.y)}const X=new l.GeometryAttributes;if(a.position&&(X.position=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.DOUBLE,componentsPerAttribute:3,values:V})),a.st&&(X.st=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:2,values:F})),a.normal&&(X.normal=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:D})),a.tangent&&(X.tangent=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:O})),a.bitangent&&(X.bitangent=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:S})),L&&(X.extrudeDirection=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.FLOAT,componentsPerAttribute:3,values:R})),o.defined(r.offsetAttribute)){let t=new Uint8Array(v);if(r.offsetAttribute===m.GeometryOffsetAttribute.TOP)t=t.fill(1,0,v/2);else{const e=r.offsetAttribute===m.GeometryOffsetAttribute.NONE?0:1;t=t.fill(e)}X.applyOffset=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.UNSIGNED_BYTE,componentsPerAttribute:1,values:t})}return X}(L,t);z=function(t){const e=t.length/3,i=p.IndexDatatype.createTypedArray(e,6*e);let r=0;for(let t=0;t<e;t++){const n=t,o=t+e,a=(n+1)%e,s=a+e;i[r++]=n,i[r++]=o,i[r++]=a,i[r++]=a,i[r++]=o,i[r++]=s}return i}(L);const Q=p.IndexDatatype.createTypedArray(2*L.length/3,z),W=new s.Geometry({attributes:U,indices:Q,primitiveType:s.PrimitiveType.TRIANGLES}),J=c.GeometryPipeline.combineInstances([new u.GeometryInstance({geometry:H}),new u.GeometryInstance({geometry:W})]);return{boundingSphere:R,attributes:J[0].attributes,indices:J[0].indices}}function O(t,e,r,o,s,l,u){const m=a.EllipseGeometryLibrary.computeEllipsePositions({center:t,semiMajorAxis:e,semiMinorAxis:r,rotation:o,granularity:s},!1,!0).outerPositions,c=m.length/3,p=new Array(c);for(let t=0;t<c;++t)p[t]=i.Cartesian3.fromArray(m,3*t);const y=i.Rectangle.fromCartesianArray(p,l,u);return y.width>n.CesiumMath.PI&&(y.north=y.north>0?n.CesiumMath.PI_OVER_TWO-n.CesiumMath.EPSILON7:y.north,y.south=y.south<0?n.CesiumMath.EPSILON7-n.CesiumMath.PI_OVER_TWO:y.south,y.east=n.CesiumMath.PI,y.west=-n.CesiumMath.PI),y}function S(t){const e=(t=o.defaultValue(t,o.defaultValue.EMPTY_OBJECT)).center,r=o.defaultValue(t.ellipsoid,i.Ellipsoid.WGS84),a=t.semiMajorAxis,s=t.semiMinorAxis,l=o.defaultValue(t.granularity,n.CesiumMath.RADIANS_PER_DEGREE),u=o.defaultValue(t.vertexFormat,y.VertexFormat.DEFAULT),m=o.defaultValue(t.height,0),c=o.defaultValue(t.extrudedHeight,m);this._center=i.Cartesian3.clone(e),this._semiMajorAxis=a,this._semiMinorAxis=s,this._ellipsoid=i.Ellipsoid.clone(r),this._rotation=o.defaultValue(t.rotation,0),this._stRotation=o.defaultValue(t.stRotation,0),this._height=Math.max(c,m),this._granularity=l,this._vertexFormat=y.VertexFormat.clone(u),this._extrudedHeight=Math.min(c,m),this._shadowVolume=o.defaultValue(t.shadowVolume,!1),this._workerName="createEllipseGeometry",this._offsetAttribute=t.offsetAttribute,this._rectangle=void 0,this._textureCoordinateRotationPoints=void 0}S.packedLength=i.Cartesian3.packedLength+i.Ellipsoid.packedLength+y.VertexFormat.packedLength+9,S.pack=function(t,e,r){return r=o.defaultValue(r,0),i.Cartesian3.pack(t._center,e,r),r+=i.Cartesian3.packedLength,i.Ellipsoid.pack(t._ellipsoid,e,r),r+=i.Ellipsoid.packedLength,y.VertexFormat.pack(t._vertexFormat,e,r),r+=y.VertexFormat.packedLength,e[r++]=t._semiMajorAxis,e[r++]=t._semiMinorAxis,e[r++]=t._rotation,e[r++]=t._stRotation,e[r++]=t._height,e[r++]=t._granularity,e[r++]=t._extrudedHeight,e[r++]=t._shadowVolume?1:0,e[r]=o.defaultValue(t._offsetAttribute,-1),e};const L=new i.Cartesian3,R=new i.Ellipsoid,j=new y.VertexFormat,z={center:L,ellipsoid:R,vertexFormat:j,semiMajorAxis:void 0,semiMinorAxis:void 0,rotation:void 0,stRotation:void 0,height:void 0,granularity:void 0,extrudedHeight:void 0,shadowVolume:void 0,offsetAttribute:void 0};S.unpack=function(t,e,r){e=o.defaultValue(e,0);const n=i.Cartesian3.unpack(t,e,L);e+=i.Cartesian3.packedLength;const a=i.Ellipsoid.unpack(t,e,R);e+=i.Ellipsoid.packedLength;const s=y.VertexFormat.unpack(t,e,j);e+=y.VertexFormat.packedLength;const l=t[e++],u=t[e++],m=t[e++],c=t[e++],p=t[e++],d=t[e++],f=t[e++],A=1===t[e++],x=t[e];return o.defined(r)?(r._center=i.Cartesian3.clone(n,r._center),r._ellipsoid=i.Ellipsoid.clone(a,r._ellipsoid),r._vertexFormat=y.VertexFormat.clone(s,r._vertexFormat),r._semiMajorAxis=l,r._semiMinorAxis=u,r._rotation=m,r._stRotation=c,r._height=p,r._granularity=d,r._extrudedHeight=f,r._shadowVolume=A,r._offsetAttribute=-1===x?void 0:x,r):(z.height=p,z.extrudedHeight=f,z.granularity=d,z.stRotation=c,z.rotation=m,z.semiMajorAxis=l,z.semiMinorAxis=u,z.shadowVolume=A,z.offsetAttribute=-1===x?void 0:x,new S(z))},S.computeRectangle=function(t,e){const r=(t=o.defaultValue(t,o.defaultValue.EMPTY_OBJECT)).center,a=o.defaultValue(t.ellipsoid,i.Ellipsoid.WGS84),s=t.semiMajorAxis,l=t.semiMinorAxis,u=o.defaultValue(t.granularity,n.CesiumMath.RADIANS_PER_DEGREE);return O(r,s,l,o.defaultValue(t.rotation,0),u,a,e)},S.createGeometry=function(t){if(t._semiMajorAxis<=0||t._semiMinorAxis<=0)return;const r=t._height,l=t._extrudedHeight,u=!n.CesiumMath.equalsEpsilon(r,l,0,n.CesiumMath.EPSILON2);t._center=t._ellipsoid.scaleToGeodeticSurface(t._center,t._center);const c={center:t._center,semiMajorAxis:t._semiMajorAxis,semiMinorAxis:t._semiMinorAxis,ellipsoid:t._ellipsoid,rotation:t._rotation,height:r,granularity:t._granularity,vertexFormat:t._vertexFormat,stRotation:t._stRotation};let y;if(u)c.extrudedHeight=l,c.shadowVolume=t._shadowVolume,c.offsetAttribute=t._offsetAttribute,y=D(c);else if(y=function(t){const r=t.center;v=i.Cartesian3.multiplyByScalar(t.ellipsoid.geodeticSurfaceNormal(r,v),t.height,v),v=i.Cartesian3.add(r,v,v);const n=new e.BoundingSphere(v,t.semiMajorAxis),o=a.EllipseGeometryLibrary.computeEllipsePositions(t,!0,!1),s=o.positions,l=o.numPts,u=N(s,t,!1);let m=P(l);return m=p.IndexDatatype.createTypedArray(s.length/3,m),{boundingSphere:n,attributes:u,indices:m}}(c),o.defined(t._offsetAttribute)){const e=y.attributes.position.values.length,i=t._offsetAttribute===m.GeometryOffsetAttribute.NONE?0:1,r=new Uint8Array(e/3).fill(i);y.attributes.applyOffset=new s.GeometryAttribute({componentDatatype:n.ComponentDatatype.UNSIGNED_BYTE,componentsPerAttribute:1,values:r})}return new s.Geometry({attributes:y.attributes,indices:y.indices,primitiveType:s.PrimitiveType.TRIANGLES,boundingSphere:y.boundingSphere,offsetAttribute:t._offsetAttribute})},S.createShadowVolume=function(t,e,i){const r=t._granularity,n=t._ellipsoid,o=e(r,n),a=i(r,n);return new S({center:t._center,semiMajorAxis:t._semiMajorAxis,semiMinorAxis:t._semiMinorAxis,ellipsoid:n,rotation:t._rotation,stRotation:t._stRotation,granularity:r,extrudedHeight:o,height:a,vertexFormat:y.VertexFormat.POSITION_ONLY,shadowVolume:!0})},Object.defineProperties(S.prototype,{rectangle:{get:function(){return o.defined(this._rectangle)||(this._rectangle=O(this._center,this._semiMajorAxis,this._semiMinorAxis,this._rotation,this._granularity,this._ellipsoid)),this._rectangle}},textureCoordinateRotationPoints:{get:function(){return o.defined(this._textureCoordinateRotationPoints)||(this._textureCoordinateRotationPoints=function(t){const e=-t._stRotation;if(0===e)return[0,0,0,1,1,0];const r=a.EllipseGeometryLibrary.computeEllipsePositions({center:t._center,semiMajorAxis:t._semiMajorAxis,semiMinorAxis:t._semiMinorAxis,rotation:t._rotation,granularity:t._granularity},!1,!0).outerPositions,n=r.length/3,o=new Array(n);for(let t=0;t<n;++t)o[t]=i.Cartesian3.fromArray(r,3*t);const l=t._ellipsoid,u=t.rectangle;return s.Geometry._textureCoordinateRotationPoints(o,e,l,u)}(this)),this._textureCoordinateRotationPoints}}}),t.EllipseGeometry=S}));
    26.